
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $145 (Frontier) |
One-way from | $86 (Kiwi.com) |
Popular in | September |
Cheapest in | August |
Average price | $428 |
Good round-trip deal | $301 or less |
Good one-way deal | $166 or less |
Fly from
Fly to
Route
Depart
Return
HoustonWashington, D.C.
IAH - DCA
IAHDCA
Houston George Bush Intcntl
Fri 9/4
7:50 pm-11:59 pm
Nonstop3h 09m
Washington, D.C. Reagan-National
Mon 9/7
8:20 am-10:38 am
Nonstop3h 18m
HoustonWashington, D.C.
IAH - IAD
IAHIAD
Houston George Bush Intcntl
Fri 10/30
11:50 am-6:26 pm
1 stop5h 36m
Washington, D.C. Dulles Intl
Mon 11/2
7:00 am-12:20 pm
1 stop6h 20m
HoustonWashington, D.C.
IAH - DCA
IAHDCA
Houston George Bush Intcntl
Wed 7/29
11:58 am-10:59 pm
1 stop10h 01m
Washington, D.C. Reagan-National
Sun 8/2
7:59 am-3:47 pm
1 stop8h 48m
HoustonWashington, D.C.
IAH - DCA
IAHDCA
Houston George Bush Intcntl
Mon 7/27
11:58 am-10:59 pm
1 stop10h 01m
Washington, D.C. Reagan-National
Thu 8/6
6:21 am-10:59 am
1 stop5h 38m
HoustonWashington, D.C.
IAH - DCA
IAHDCA
Houston George Bush Intcntl
Wed 7/22
7:46 am-11:56 am
Nonstop3h 10m
Washington, D.C. Reagan-National
Tue 7/28
12:59 pm-3:18 pm
Nonstop3h 19m
HoustonWashington, D.C.
IAH - DCA
IAHDCA
Houston George Bush Intcntl
Wed 7/29
11:58 am-10:59 pm
1 stop10h 01m
Washington, D.C. Reagan-National
Sat 8/1
6:00 am-11:47 am
1 stop6h 47m
HoustonWashington, D.C.
IAH - DCA
IAHDCA
Houston George Bush Intcntl
Wed 10/14
6:05 pm-10:14 pm
Nonstop3h 09m
Washington, D.C. Reagan-National
Sat 10/17
12:57 pm-3:16 pm
Nonstop3h 19m
HoustonWashington, D.C.
IAH - IAD
IAHIAD
Houston George Bush Intcntl
Wed 8/12
8:20 pm-12:30 am
Nonstop3h 10m
Washington, D.C. Dulles Intl
Sat 8/15
10:29 pm-12:45 am
Nonstop3h 16m
HoustonWashington, D.C.
IAH - IAD
IAHIAD
Houston George Bush Intcntl
Mon 10/5
2:51 pm-7:02 pm
Nonstop3h 11m
Washington, D.C. Dulles Intl
Mon 10/12
6:15 am-8:27 am
Nonstop3h 12m
HoustonWashington, D.C.
IAH - IAD
IAHIAD
Houston George Bush Intcntl
Wed 10/14
9:40 am-4:36 pm
1 stop5h 56m
Washington, D.C. Dulles Intl
Sun 10/18
6:10 am-10:39 am
1 stop5h 29m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars |
Currently, November is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to Washington, D.C. (average of $38). Flying from Houston George Bush Intcntl Airport to Washington, D.C. in June is currently the most expensive (average of $188). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
A simple way to save on the total cost of your ticket is to fly from Houston George Bush Intcntl Airport to Washington, D.C. at noon. If you’re flexible enough to do this you can expect to save up to 21% on your trip compared to booking a flight in the evening.
The most flights from IAH to WAS are scheduled on a Tuesday (40 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (11 on average).
Booking 76 days in advance of your planned departure date is, on average, the best time to get cheap flights from Houston George Bush Intcntl Airport to Washington, D.C.. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Travelers seeking maximum savings on their Houston George Bush Intcntl Airport to Washington, D.C. flight should consider departing on Saturday at noon when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Food
Entertainment
Boarding
Overall
Crew
Comfort
Reviews
Dane,Jan 2026
TYS - IAD
Food
Entertainment
Boarding
Overall
Crew
Comfort
Reviews
Dane,Jan 2026
TYS - IAD
Food
Entertainment
Boarding
Overall
Crew
Comfort
Reviews
Dane,Jan 2026
TYS - IAD
Food
Entertainment
Boarding
Overall
Crew
Comfort
Reviews
Dane,Jan 2026
TYS - IAD
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$106 | Average$256 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$186 | Average$378 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$189 | Average$461 | FlexibilityNo cancel fee | On-time69% |